Improvement in governor-controlling mechanism



2 Sheets-Sheet 1.

J. S. WILSON. Governor0ontro11ing Mechanism.

No. 204,693. Patented June 11, 1878.

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J. s. WILSON.

Governor-Controlling Mechanism.

Patented June 11, 1878.

N. FEYERS, PHDTO-LITHOGRAPHER, WASHINGTON, I) (2y UNITED STATES PATENTOFFICE.

JOSEPH S. WILSON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR. TO THEWILLIAM CRAMP & SONS SHIP AND ENGINE BUILDING COMPANY, OF

SAME PLACE.

IMPROVEMENT IN GOVERNOR-CONTROLLING MECHANISM.

Specification forming part of Letters Patent No. 204,693, dated June 11,1878; application filed April 12, 1878.

To all whom it may concern:

Be it known that I, JOSEPH SHIELDS WIL- SON, of Philadelphia,Pennsylvania, have invented a new and useful Improvement in Apparatusfor Governing Steam-Engines, which improvement is fully set forth in thefollowing specification and accompanying drawings, in which- Figure 1 isa side elevation. end elevation.

The nature of my invention consists in controlling and regulating thespeed of an engine through the reversing-link by means of a governorattached to the starting-handle of an intermediate or auxiliary steamcylinder, the valve of which is operated by a system ofcompensating-levers.

By this invention a small governor has perfeet control of thereversing-link of the largest marine engine.

The high-pressure cylinder is indicated by letter A. B is thelow-pressure cylinder. 0. b are the main valve-rods.

The reversing-gear consists of the usual reversing-link O, theeccentric-rods d d, and an auxiliary steam-cylinder, E, to operate thereversing-shaft G.

The reversing-shaft is connected to the reversing-link by the rod g, andby this means the reversing-link is thrown into forward, mid, or backgear, as is now customary.

The low-pressure cylinder has a similar reversing-link andeccentric-rods.

The steam is admitted to the auxiliary cylinder E by the three-portslide-valve 0 which valve is controlled by the starting-handle H and apeculiar arrangement of compensatinglevers.

The handle H is fulcrumed at h, and operates a link, K, which is hingednear the center of the compensatinglever k. This lever is attached atone end to the valverod c and at the other end to the rod 70 Theopposite Fig. 2 is an end of the rod is is jointed to the arm 9 of thereversing-shaft, and the said arm is operated directly by the piston ofthe auxiliary steam-cylinder E.

By this arrangement the piston of the auxiliary steam-cylinder E retainsa position in the cylinder corresponding to the position of the handleH; and consequently, by a very small expenditure of force upon thehandle H, the ordinary reversing-link O of compound marine engines mayeasily be handled.

M is a small governor upon the frame of the engines. It is placedhorizontal, and the weights are restrained by springs,this style ofgovernor being preferable for marine engines.

The movement of this governor is communicated by a rod, m, to the handleH and by the apparatus above described a very powerful marine engine canbe brought under the perfect control of a small governor.

I am aware that governors have been attached direct to thereversing-link, and, also, that the common mode of controlling marineengines is by a throttle-valve, which shuts off the steam from thehigh-pressure cylinder, but this only partially accomplishes the purposein compound engines, as there is no direct control of the low-pressureengine.

In my invention, however, the governor operates, by intermediatemechanism, the main valve of each cylinder, this quickness of operationbeing essential for sea-going screw-engines during a storm.

While my invention is especially of benefit in the above-mentionedengines, I do not confine my invention to them, but apply it as well toplain engines.

What I claim is- The combination of a governor operating thestarting-handle H of the auxiliary steamcylinder E, thecompensating-levers and links K 70 70 the reversingshaft G, and the link0, all connected and operating to control the valve, substantially asherein described.

JOSEPH SHIELDS WILSON.

Witnesses:

JOHN F. GRANT, HORACE LEE.

